Originally Posted By UCUDANT
Finding the grommet is fun smile The PCV is 3/4 where it enters the valve cover. I ordered (am awaiting) a grommet online that is 3/4" ID, and 1" OD. Since I have aluminum valve covers Iliked this one as it appears deeper and I will trim the lower neck if I need to.

http://www.ebay.com/itm/Ford-Mustang-PCV...2-/111669199849


You da man!

The Dorman PN I provided is also for a Ford application (Ranger/Aerostar)